Blar i Institutt for biologi på emneord "Biology (MSBIO), Ecology, Behaviour, Evolution and Biosystematics"
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A General Stochastic Dynamic Model of the Differential Allocation Hypothesis
(Master thesis, 2015)Differential allocation (DA), adjusting reproductive investment according to the quality of the current mate, is an area of evolutionary behavioral ecology subject to much confusion, with vague terminology, apparently ... -
Can Environmental Features Explain Variation in Free Ranging Sheep Mortality Exposed to Eurasian Lynx Predation?
(Master thesis, 2015)The recovery of large carnivores in Europe has led to widespread and chronic conflicts because of their depredation on livestock, which can have important economic implications for farmers. The conflict between Eurasian ... -
Covarying Behaviours and Innovation in a House Sparrow Metapopulation - Implications for Social Foraging
(Master thesis, 2016)Individuals in populations of many species have been found to differ consistently in suites of correlating behavioural measures. These phenomena appear to be heritable and subject to selection, thus making it as important ... -
Developing a laboratory cultivation protocol for local species of Porphyra spp.
(Master thesis, 2016)The cultivation of Porphyra for use in food has a long tradition in Asian countries, and with recent food trends and nutritional awareness, macroalgae has become a popular ingredient throughout the rest of the world as ... -
Distinguishing animal personality and innovation in the guppy - the effect of sex and body size
(Master thesis, 2015)How individuals within the same population show consistent differences in different behaviours, i.e. animal personalities, and how these correlate into a wider behavioural syndrome has become a hot topic in behavioural ... -
Divergence in Thermal Reaction Norms of Life-History Traits Among Populations of Daphnia magna
(Master thesis, 2018)Patterns of phenotypic and genetic variance in thermal reaction norms allow predicting evolutionary response for a population. The ability of phenotypic traits to respond to selection depends on their genetic variance, and ... -
Does seed size respond to selection on blossom size? - An artificial selection experiment on Dalechampia scandens
(Master thesis, 2017)1. Within populations variation in seed size may result from phenotypic correlation between seed size and flower size, a hypothesis originally suggested by Primack (1987). Such phenotypic correlation can be generated either ... -
The Effect of Management on Effective Population Size in the Arctic Fox (Vulpes lagopus) Metapopulation in Scandinavia.
(Master thesis, 2017)Estimates of effective population size (Ne) may provide insight to patterns of changes in allele frequencies and heterozygosity in a population. Furthermore, by estimating Ne, one can predict future changes in genetic ... -
Effects of Climate on Chick Growth in the Black-legged Kittiwake (Rissa tridactyla)
(Master thesis, 2015)Seabirds are declining worldwide as a result of anthropogenic influences, primarily through climate change affecting the food availability. One of the declining species is the black-legged kittiwake (Rissa tridactyla), ... -
Effects of Lichens on Seed Germination and Seedling Emergence of Vascular Plants on Dovre
(Master thesis, 2015)Lichens are observed to decline when shrub covers increases due to global warming and reduced grazing in alpine and arctic areas. However, lichens are still prominent in many mountain habitats where they cover large areas. ... -
Effects of rainfall seasonality and seed size on seed dormancy in a perennial tropical plant
(Master thesis, 2018)In seasonal environments, precise timing of germination to match favorable environmental conditions is crucial for successful plant establishment. The timing of germination can be controlled by seed dormancy, i.e. delay ... -
Effects of Variation in Egg Size on Offspring Fitness in Populations of House Sparrow (Passer domesticus)
(Master thesis, 2015)1. Egg size represents an important life-history trait, which may have effects on the fitness of offspring. The effect of variation in egg size on offspring fitness has been studied within many taxa, but there is still a ... -
Fitness costs of delayed (self-) pollination in a mixed-mating plant
(Master thesis, 2018)Delayed selfing may provide reproductive assurance for plants facing unreliable pollination environments, but may negatively affect the reproductive performance due to inbreeding depression. Furthermore, floral senescence ... -
Genetic Basis of Variation in Litter Size in Scandinavian Arctic Fox (Vulpes lagopus)
(Master thesis, 2018)The environment is in constant change, where rapid shifts is often due to human interference. To understand the mechanisms driving phenotypic change in ecologically important traits, knowledge of the genetic basis of these ... -
Genetic consequences of conservation management: the case of the arctic fox (Vulpes lagopus) in Scandinavia
(Master thesis, 2017)The Arctic fox (Vulpes lagopus) population in Fennoscandia experienced a drastic demographic and genetic bottleneck in the early 20th century as a result of high hunting pressure. In 2000, despite almost 70 years of ... -
Gross Growth Efficiency of Daphnia magna:Genetic Variance and Effects of Temperature
(Master thesis, 2017)Gross Growth Efficiency (GGE) is defined as the ratio between Somatic Growth Rate (SGR) and food consumption, and hence represents the quantity of food eaten that is converted to body mass. SGR correlates with intrinsic ... -
Growth models for assessing anthropogenic impacts on King scallop, Pecten maximus (Bivalvia), at Frøya, Norway
(Master thesis, 2018)In marine ecosystems, the performance of coastal species is affected by anthropogenic activities such as aquaculture and plastic pollution. These impacts will increase in the future as the human population and consumption ... -
How Does Spring Migration and Day Length Affect the Diving Ecology of a Capital Breeder Wintering at High Latitudes?
(Master thesis, 2016)Foraging strategies in animals are influenced by conflicting constraints such as migration, reproduction and seasonal changes in the environment. Sea ducks are capital breeders and rely on endogenous reserves for reproduction. ... -
Hyraxes and humans in Serengeti National Park - flight initiation distance and demography
(Master thesis, 2015)Menneskelig aktivitet er en kilde til forstyrrelser for de fleste dyr, som reagerer med en rekke atferdsmessige responser e.g. økt antipredator atferd eller relokalisering til et nytt område, ofte med kostnader som påvirker ...